6. The White Stripes
The White Stripes didn't seem like a group destined for the long haul. By the time the band started to break big in the very early 2000s, the duo was already divorced, but somehow, that seemed to have little impact. The bigger issue seemed to be Meg; the drummer was ill-equipped for stardom and she shied away from the spotlight. They called off a bunch of dates in 2007 because she was suffering from "acute anxiety." She then married Jackson Smith (son of Patti Smith and Fred "Sonic" Smith), had a baby and fell off the grid. Jack White said he was quite happy to keep the White Stripes going, but Meg had no interest.
However, like Oasis, they are still young. Odds are, the two of them will play together at some point again. It might be in 20 years, but they're bound to cross paths somewhere down the road. If Mike Love and Brian Wilson can share a stage again, anything is possible.